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Clin Sports Med 2005, 24:e1-e13. This paper provides good background information about caffeine, its potential ergogenic effects for athletes, and potential risks and benefits.
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Davis JM, Zhao Z, Stock HS, et al.: Central nervous system effects of caffeine and adenosine on fatigue. J Appl Physiol 2003, 284:399–404. One of the initial studies outlining the effects that caffeine play in the central nervous system and its crucial role as an antagonist of adenosine receptors.
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